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emmasim [6.3K]
3 years ago
9

The ratio of the area of a circle to the circumference of the circle (

%20" id="TexFormula1" title=" \frac{A}{C} " alt=" \frac{A}{C} " align="absmiddle" class="latex-formula">) is \frac{7}{1}. Find the circumference of the circle. Leave your answer in terms of pi.
Mathematics
1 answer:
maxonik [38]3 years ago
8 0
\dfrac{\pi r^2}{2\pi r}=\dfrac{7}{1}\\
\dfrac{r}{2}=\dfrac{7}{1}\\
r=14\\\\
C=2\pi \cdot14=28\pi
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